Solid State Logic Stereo Bus Compressor Module User guide

Brand: Solid State Logic

Model: Stereo Bus Compressor Module

Type: User guide

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G Series Bus Compressor Module

for 500 Series Racks

User Guide

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Safety and Installation Considerations

This page contains denitions, warnings, and practical information to ensure a safe

working environment. Please take time to read this page before installing or using this

apparatus.

General Safety

• Read these instrucons.

• Keep these instrucons.

• Heed all warnings.

• Follow all instrucons.

• Do not use this apparatus near water.

• Do not expose this apparatus to rain or moisture.

• Clean only with dry cloth.

• Do not block any venlaon openings.

• Install in accordance with the rack manufacturer’s instrucons.

• There are no user-adjustments, or user-servicable items, on this apparatus.

• Adjustments or alteraons to this apparatus may aect the performance such

that safety and/or internaonal compliance standards may no longer be met.

• This apparatus is not to be used in safety crical applicaons

Caution

• This apparatus should not be used outside of the scope of API 500 series compable

racks.

• Do not operate this apparatus with any covers removed.

• To reduce the risk of electric shock, do not perform any servicing other than that

contained in these Installaon Instrucons unless you are qualied to do so. Refer all

servicing to qualied service personnel.

Installation

• Ensure power is removed from the rack before ng or removing this apparatus to

or from the rack.

• Use the panel xing screws supplied with the rack to secure this apparatus into the

rack.

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Standards Compliance

This apparatus is designed to be installed and used in API

500 series compatible racks which are CE marked. The CE

mark on a rack is indicative that the manufacturer conrms

that it meets both EMC and the Low Voltage Directive

(2006/95/EC).

Instructions for Disposal of WEEE by Users in the

European Union

The symbol shown here is on the product or on its

packaging, which indicates that this product must not

be disposed of with other waste. Instead, it is the user’s

responsibility to dispose of their waste equipment by

handing it over to a designated collection point for

recycling of waste electrical and electronic equipment. The separate

collection and recycling of your waste equipment at the time of

disposal will help to conserve natural resources and ensure that

it is recycled in a manner that protects human health and the

environment. For more information about where you can drop

off your waste equipment for recycling, please contact your local

city ofce, your household waste disposal service or where you

purchased the product.

Limited Warranty

Please refer any warranty claim to the supplier of this equipment in

the rst instance. Full warranty information for equipment supplied

directly by Solid State Logic can be found on our website:

www.solidstatelogic.com

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Introduction

Congratulations on your purchase of this API 500 format compatible

SSL G Series Bus Compressor module.

This module has been specically designed to operate in a 500

format rack such as the API lunchbox® or equivalent. In common

with many such modules, the nominal input/output level is +4dBu.

The module is a stereo compressor, designed to provide exible

control over a stereo mix. The compressor design is based around

the Bus Compressor found in the SL 4000 G Series console.

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Operation

Please refer to the front panel illustration

The main VCA is permanently in circuit; the compressor sidechain

is enabled by the IN switch. The other sidechain controls are

equally straight forward and hopefully require little explanation.

The ATTACK, RATIO and RELEASE controls are multi-position

switches; the THRESHOLD and MAKE-UP controls are

continuously variable potentiometers.

It should be noted that the knee point of the compressor, set with

the THRESHOLD control, purposely changes depending on the

setting of the RATIO control. Decreasing the RATIO setting lowers

the effective threshold, hence maintaining the perceived ‘loudness’

of the compressed signal.

The compressor features a classic ‘dominant’ sidechain

architecture. The left and right channels are independently rectied

using a true peak full wave detector circuit, and the dominant, ie.

louder channel, controls the gain reduction of the overall stereo

level via the user selected time constants. The compressor now

features an HPF (High Pass Filter) in the sidechain, which is

controlled by a multi-position switch.

The illuminated compression meter at the top of the module

displays gain reduction for the compressor.

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Visit SSL at:

www.solidstatelogic.com

SSL® and Solid State Logic® are ® registered trademarks of Solid State Logic.

ORIGIN™, SuperAnalogue™, VHD™ and PureDrive™ are trademarks of Solid State Logic.

All other product names and trademarks are the property of their respective owners and are

hereby acknowledged.

No part of this publication may be reproduced in any form or by any means, whether me-

chanical or electronic, without the written permission of Solid State Logic, Oxford, OX5 1RU,

England.

As research and development is a continual process, Solid State Logic reserves the right to

change the features and specications described herein without notice or obligation.

Solid State Logic cannot be held responsible for any loss or damage arising directly or

indirectly from any error or omission in this manual.

PLEASE READ ALL INSTRUCTIONS, PAY SPECIAL HEED TO SAFETY WARNINGS.

E&OE

July 2020

Revision History

Revision V2.0, June 2020 - Revised Layout Release for Module Update

Solid State Logic Stereo Bus Compressor Module User guide

Solid State Logic Stereo Bus Compressor Module User guide

Solid State Logic Stereo Bus Compressor Module User guide

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